Question

which term of the a.p.11,8,5,2 is -15​

Answer 1

Answer:

Correct question

Is −150 a term of the A.P : 11,8,5,2 ?

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For this A.P., a = 11 d = a2 − a1 = 8 − 11 = −3 Let −150 be the n th term of this A.P.

We know that, an = a + (n − 1) d -150

= 11 + (n - 1)(-3) -150

= 11 - 3n + 3 -164 = -3n

n = 164/3

Clearly, n is not an integer.

Therefore, - 150 is not a term of this A.P